Supplementary Materials: Individual repeatability, species differences, and the influence of socio-ecological factors on neophobia in 10 corvid species SUPPLEMENTARY MATERIALS 2 Figure S1 . Latency to touch familiar food in each round, across all conditions and species. Round 3 differs from round 1 and 2, while round 1 and 2 do not differ from each other. Points represent individuals, lines represent median. SUPPLEMENTARY MATERIALS 3 Figure S2 . Site effect on latency to touch familiar food in azure-winged magpie, carrion crow and pinyon jay. SUPPLEMENTARY MATERIALS 4 Table S1 Pairwise comparisons of latency data between species Estimate Standard error z p-value Blue jay - Azure-winged magpie 0.491 0.209 2.351 0.019 Carrion crow - Azure-winged magpie -0.496 0.177 -2.811 0.005 Clark’s nutcracker - Azure-winged magpie 0.518 0.203 2.558 0.011 Common raven - Azure-winged magpie -0.437 0.183 -2.392 0.017 Eurasian jay - Azure-winged magpie 0.284 0.166 1.710 0.087 ’Alal¯a- Azure-winged magpie 0.416 0.144 2.891 0.004 Large-billed crow - Azure-winged magpie 0.668 0.189 3.540 0.000 New Caledonian crow - Azure-winged magpie -0.316 0.209 -1.513 0.130 Pinyon jay - Azure-winged magpie 0.118 0.170 0.693 0.488 Carrion crow - Blue jay -0.988 0.199 -4.959 0.000 Clark’s nutcracker - Blue jay 0.027 0.223 0.122 0.903 Common raven - Blue jay -0.929 0.205 -4.537 0.000 Eurasian jay - Blue jay -0.207 0.190 -1.091 0.275 ’Alal¯a- Blue jay -0.076 0.171 -0.443 0.658 Large-billed crow - Blue jay 0.177 0.210 0.843 0.399 New Caledonian crow - Blue jay -0.808 0.228 -3.536 0.000 Pinyon jay - Blue jay -0.374 0.193 -1.937 0.053 Clark’s nutcracker - Carrion crow 1.015 0.193 5.271 0.000 Common raven - Carrion crow 0.059 0.172 0.344 0.731 Eurasian jay - Carrion crow 0.780 0.154 5.079 0.000 ’Alal¯a- Carrion crow 0.912 0.129 7.065 0.000 Large-billed crow - Carrion crow 1.165 0.178 6.547 0.000 New Caledonian crow - Carrion crow 0.180 0.199 0.904 0.366 Pinyon jay - Carrion crow 0.614 0.157 3.901 0.000 Common raven - Clark’s nutcracker -0.956 0.198 -4.822 0.000 Eurasian jay - Clark’s nutcracker -0.234 0.183 -1.281 0.200 ’Alal¯a- Clark’s nutcracker -0.103 0.163 -0.631 0.528 Large-billed crow - Clark’s nutcracker 0.150 0.204 0.736 0.462 New Caledonian crow - Clark’s nutcracker -0.835 0.223 -3.749 0.000 Pinyon jay - Clark’s nutcracker -0.401 0.186 -2.154 0.031 Eurasian jay - Common raven 0.721 0.161 4.487 0.000 ’Alal¯a- Common raven 0.853 0.137 6.206 0.000 Large-billed crow - Common raven 1.106 0.184 6.007 0.000 New Caledonian crow - Common raven 0.121 0.205 0.591 0.554 Pinyon jay - Common raven 0.555 0.164 3.377 0.001 ’Alal¯a- Eurasian jay 0.132 0.114 1.151 0.250 Large-billed crow - Eurasian jay 0.384 0.168 2.294 0.022 New Caledonian crow - Eurasian jay -0.600 0.190 -3.159 0.002 Pinyon jay - Eurasian jay -0.166 0.146 -1.144 0.253 Large-billed crow - ’Alal¯a 0.253 0.145 1.739 0.082 New Caledonian crow - ’Alal¯a -0.732 0.171 -4.286 0.000 Pinyon jay - ’Alal¯a -0.298 0.119 -2.499 0.012 New Caledonian crow - Large-billed crow -0.985 0.210 -4.686 0.000 Pinyon jay - Large-billed crow -0.551 0.171 -3.222 0.001 Pinyon jay - New Caledonian crow 0.434 0.193 2.247 0.025 SUPPLEMENTARY MATERIALS 5 Table S2 Linear mixed models with main effect of site on latency to touch familiar food for the three species that were tested in two sites Azure-winged magpie Carrion crow Pinyon jay Fixed effect Chisq df p-value Chisq df p-value Chisq df p-value site 1.024 1 0.312 0.078 1 0.78 4.35 1 0.037 SUPPLEMENTARY MATERIALS 6 Table S3 Pairwise comparisons of novel object difference scores between species Estimate Standard error z p-value Blue jay - Azure-winged magpie -0.183 0.202 -0.905 0.366 Carrion crow - Azure-winged magpie 0.193 0.175 1.101 0.271 Clark’s nutcracker - Azure-winged magpie -0.307 0.196 -1.566 0.117 Common raven - Azure-winged magpie 0.396 0.178 2.227 0.026 Eurasian jay - Azure-winged magpie 0.191 0.164 1.165 0.244 ’Alal¯a- Azure-winged magpie 0.248 0.140 1.777 0.076 Large-billed crow - Azure-winged magpie -0.438 0.183 -2.397 0.017 New Caledonian crow - Azure-winged magpie -0.134 0.203 -0.658 0.510 Pinyon jay - Azure-winged magpie -0.059 0.165 -0.358 0.720 Carrion crow - Blue jay 0.375 0.193 1.942 0.052 Clark’s nutcracker - Blue jay -0.124 0.212 -0.584 0.559 Common raven - Blue jay 0.579 0.196 2.955 0.003 Eurasian jay - Blue jay 0.373 0.183 2.040 0.041 ’Alal¯a- Blue jay 0.431 0.162 2.660 0.008 Large-billed crow - Blue jay -0.255 0.200 -1.275 0.202 New Caledonian crow - Blue jay 0.049 0.219 0.224 0.823 Pinyon jay - Blue jay 0.124 0.184 0.671 0.502 Clark’s nutcracker - Carrion crow -0.499 0.187 -2.670 0.008 Common raven - Carrion crow 0.204 0.168 1.210 0.226 Eurasian jay - Carrion crow -0.002 0.153 -0.014 0.989 ’Alal¯a- Carrion crow 0.056 0.127 0.438 0.661 Large-billed crow - Carrion crow -0.631 0.173 -3.639 0.000 New Caledonian crow - Carrion crow -0.326 0.194 -1.678 0.093 Pinyon jay - Carrion crow -0.252 0.154 -1.632 0.103 Common raven - Clark’s nutcracker 0.703 0.190 3.704 0.000 Eurasian jay - Clark’s nutcracker 0.497 0.176 2.819 0.005 ’Alal¯a- Clark’s nutcracker 0.555 0.155 3.590 0.000 Large-billed crow - Clark’s nutcracker -0.132 0.194 -0.677 0.498 New Caledonian crow - Clark’s nutcracker 0.173 0.213 0.811 0.417 Pinyon jay - Clark’s nutcracker 0.248 0.178 1.394 0.163 Eurasian jay - Common raven -0.206 0.156 -1.317 0.188 ’Alal¯a- Common raven -0.148 0.131 -1.127 0.260 Large-billed crow - Common raven -0.834 0.176 -4.733 0.000 New Caledonian crow - Common raven -0.530 0.197 -2.689 0.007 Pinyon jay - Common raven -0.455 0.158 -2.890 0.004 ’Alal¯a- Eurasian jay 0.058 0.111 0.522 0.602 Large-billed crow - Eurasian jay -0.629 0.162 -3.886 0.000 New Caledonian crow - Eurasian jay -0.324 0.184 -1.760 0.078 Pinyon jay - Eurasian jay -0.250 0.141 -1.768 0.077 Large-billed crow - ’Alal¯a -0.687 0.138 -4.985 0.000 New Caledonian crow - ’Alal¯a -0.382 0.163 -2.338 0.019 Pinyon jay - ’Alal¯a -0.307 0.113 -2.727 0.006 New Caledonian crow - Large-billed crow 0.304 0.201 1.512 0.131 Pinyon jay - Large-billed crow 0.379 0.163 2.325 0.020 Pinyon jay - New Caledonian crow 0.075 0.185 0.402 0.687 SUPPLEMENTARY MATERIALS 7 Table S4 Pairwise comparisons of novel food difference scores between species Estimate Standard error z p-value Blue jay - Azure-winged magpie -0.005 0.179 -0.031 0.976 Carrion crow - Azure-winged magpie 0.145 0.156 0.932 0.352 Clark’s nutcracker - Azure-winged magpie -0.010 0.173 -0.059 0.953 Common raven - Azure-winged magpie 0.010 0.158 0.066 0.948 Eurasian jay - Azure-winged magpie 0.446 0.146 3.046 0.002 Large-billed crow - Azure-winged magpie 0.012 0.162 0.072 0.942 New Caledonian crow - Azure-winged magpie -0.186 0.179 -1.040 0.298 Pinyon jay - Azure-winged magpie 0.024 0.146 0.164 0.869 Carrion crow - Blue jay 0.151 0.171 0.879 0.380 Clark’s nutcracker - Blue jay -0.005 0.187 -0.025 0.980 Common raven - Blue jay 0.016 0.173 0.091 0.927 Eurasian jay - Blue jay 0.452 0.163 2.771 0.006 Large-billed crow - Blue jay 0.017 0.177 0.097 0.923 New Caledonian crow - Blue jay -0.180 0.192 -0.937 0.349 Pinyon jay - Blue jay 0.029 0.163 0.181 0.856 Clark’s nutcracker - Carrion crow -0.155 0.166 -0.936 0.349 Common raven - Carrion crow -0.135 0.150 -0.900 0.368 Eurasian jay - Carrion crow 0.301 0.138 2.187 0.029 Large-billed crow - Carrion crow -0.133 0.154 -0.867 0.386 New Caledonian crow - Carrion crow -0.331 0.171 -1.930 0.054 Pinyon jay - Carrion crow -0.121 0.137 -0.883 0.377 Common raven - Clark’s nutcracker 0.021 0.168 0.122 0.903 Eurasian jay - Clark’s nutcracker 0.456 0.157 2.902 0.004 Large-billed crow - Clark’s nutcracker 0.022 0.172 0.127 0.899 New Caledonian crow - Clark’s nutcracker -0.175 0.187 -0.936 0.349 Pinyon jay - Clark’s nutcracker 0.034 0.157 0.218 0.827 Eurasian jay - Common raven 0.436 0.140 3.113 0.002 Large-billed crow - Common raven 0.001 0.156 0.009 0.993 New Caledonian crow - Common raven -0.196 0.173 -1.131 0.258 Pinyon jay - Common raven 0.014 0.139 0.098 0.922 Large-billed crow - Eurasian jay -0.435 0.145 -3.007 0.003 New Caledonian crow - Eurasian jay -0.632 0.163 -3.876 0.000 Pinyon jay - Eurasian jay -0.422 0.127 -3.337 0.001 New Caledonian crow - Large-billed crow -0.197 0.177 -1.116 0.265 Pinyon jay - Large-billed crow 0.012 0.144 0.085 0.932 Pinyon jay - New Caledonian crow 0.210 0.163 1.290 0.197 SUPPLEMENTARY MATERIALS 8 Table S5 Individual temporal repeatability within each species and condition Species Control Novel object Novel food Azure-winged magpie N=13, ICC=0.309 N=13, ICC=0.593 N=14, ICC=0.233 (0.000, 0.658), p = 0.044 (0.211, 0.827), p = 0.001 (0.000, 0.611), p = 0.121 Blue jay N=9, ICC=0.962 (0.864, N=9, ICC=0.814 (0.432, N=9, ICC=0.680 (0.252, 0.989), p < 0.001 0.939), p < 0.001 0.898), p < 0.001 Carrion crow N=18, ICC=0.740 N=17, ICC=0.755 N=17, ICC=0.456 (0.477, 0.884), p < 0.001 (0.536, 0.893), p < 0.001 (0.102, 0.731), p = 0.002 Clark’s nutcracker N=10, ICC=0.535 N=10, ICC=0.582 N=10, ICC=0.492 (0.100, 0.818), p = 0.002 (0.134, 0.832), p = 0.001 (0.043, 0.801), p = 0.005 Common raven N=15, ICC=0.638 N=15, ICC=0.707 N=15, ICC=0.630 (0.306, 0.835), p < 0.001 (0.436, 0.878), p < 0.001 (0.302, 0.828), p < 0.001 Eurasian jay N=24, ICC=0.557 N=24, ICC=0.290 N=24, ICC=0.346 (0.289, 0.754), p < 0.001 (0.000, 0.568), p = 0.012 (0.039, 0.634), p = 0.003 ’Alal¯a N=84, ICC=0.542 N=84, ICC=0.540 NA (0.418, 0.650), p < 0.001 (0.426, 0.653), p < 0.001 Large-billed crow N=13, ICC=0.496 N=13, ICC=0.216 N=13, ICC=0.426 (0.117, 0.761), p = 0.001 (0.000, 0.571), p = 0.099 (0.048, 0.734), p = 0.006 New Caledonian crow N=9, ICC=0.177 (0.000, N=9, ICC=0.164